mags vs drag race

ive heard people say that oversized rims are bad for drag.(ie 17s 18s). why is this, and what size would be considerd good??

its bad because wheels weight a lot, also a car with higher sidewall will have better traction on a straight line, plus most slicks require a big sidewall.......all this combined makes it better to have smaller mags, size depends on the car.....for my car I have 17" with 315 wide rear tires on BFG Drag radials......this thing is gonna grip like crazy.........yet I couldve put awsome 19inchers if I wouldve wanted.....

-tires cost more if the rim is bigger
-rim will weight more, so the car puts more torque on the wheel and less on the ground
-the number of engine rotation you'll need to make lets say 10 meters will decrease, the car will accelerate slower but will have better top speed ( you dont want that since dragracing is an acceleration races)

sick....so the sidewall is like the profile of the tire right?? like the middle # on the tire size??

Yea, susally you want small rims for drag racing.

cool, thnx for the info!!!